These are the links we used to make these media's on this page and where we got the information.

How a volcano erupts:
http://www.tech-faq.com/how-a-volcano-erupts.html

Facts and more
:http://library.thinkquest.org/J003007/Disasters2/volcano/interesting/interesting.htm,
http://en.wikipedia.org/wiki/Krakatoa,
http://news.nationalgeographic.com/news/2011/03/pictures/110307-hawaii-volcano-erupts-kilauea-lava/